LaMotte DO Tracer Meter, Manual

Page 1: ...TRACER DISSOLVED OXYGEN CODE 1761 POCKETESTER TM See Short form Instruction on the back cover Read the entire manual before use ...

Page 2: ...WARNING This set contains chemicals that may be harmful if misused Read cautions on individual containers carefully Not to be used by children except under adult supervision ...

Page 3: ...linity Compensation 9 Changing the Altitude Compensation 9 Changing Measurement Units 9 Data Hold 10 Low Battery Indicator 10 Storing Readings 10 Recalling Stored Readings 10 Clearing Stored Memory 11 Disable Auto Power Off 11 Calibration 11 Calibration 12 Zero Oxygen Calibration 13 14 Operational Matrix 15 Maintenance 15 Battery Replacement 15 Replacing the Electrode 15 Storage 15 Electrode Clean...

Page 4: ...m Temp 0 to 50 C 32 to 122 F Resolution Sat 0 1 DO 0 01 mg L 0 01 ppm Temp 0 1 C 0 1 F 0 to 99 F 1 0 F 100 F Accuracy Sat 2 0 full scale DO 2 full scale Temp 1 0 C 1 8 F Operating Temperature Range 0 to 50 C 32 to 122 F Automatic Temperature Compensation 0 to 50 C 32 to 122 F Salinity Compensation 0 to 50 ppt in 1 ppt increments Altitude Compensation 0 to 20 000 ft in 1000 ft increments Sensor Pol...

Page 5: ... cup Lanyard PARTS ACCESSORIES DO Replacement Sensor Kit sensor module membrane cap assembly electrolyte solution Code1762 DO Membrane Cap Kit 6 membrane cap assemblies electrolyte solution Polishing Strips Code 1761M DO Extension Cable 1 meter with probe guard and weight Code 1763 DO Extension Cable 5 meters with probe guard and weight Code 1764 5 ...

Page 6: ...re units recall data 5 ON OFF button 6 Electrode retaining collar 7 Dissolved oxygen sensor 8 Bonded membrane cap assembly 9 Membrane Cathode Note The electrode storage cap is not shown TRACER Display 1 Bar graph reading 2 Measurement units 3 Main display 4 Battery indicator 5 Temperature display 6 Reading hold indicator 6 1 2 3 4 5 6 7 8 9 Bottom View of Electrode Cathode Membrane ...

Page 7: ...rifting and is steady If the saturation value that is displayed is 101 7 proceed to Testing Measurement 3 If the displayed saturation is not 101 7 the meter must be calibrated NOTE The auto power off feature will automatically shut the meter off 10 minutes after the last button was pressed If the initial polarization of the electrode takes longer than 10 minutes the auto power off feature must be ...

Page 8: ... the electrode above the bottom edge of the electrode collar 4 Slowly use the meter to stir the sample or use a magnetic stirrer The probe consumes oxygen at the measuring surface Constant sample movement is required to obtain representative results 5 The display will blink until a stable reading is achieved Record the reading NOTE For maximum accuracy allow sufficient time for the temperature of ...

Page 9: ...er thousand The available salinity compensation range is 0 to 50 ppt 4 Press and release the CAL RECALL button to save the compensation setting and return to the measurement mode Changing the Altitude Compensation 1 Press the ON OFF button to turn the meter on 2 Press and release the CAL RECALL button twice within 4 seconds SAL will be displayed 3 Press and hold the CAL RECALL button for 2 seconds...

Page 10: ...ode and HOLD will be displayed The storage location number will be displayed on the lower display followed by the reading being stored 2 Press the MODE HOLD button to exit the HOLD mode and return to normal operation 3 To store the next reading press the MODE HOLD button when the reading is displayed 4 If an attempt is made to store more than 25 readings the stored readings will be overwritten sta...

Page 11: ... quickly 5 To re enable the auto off feature turn the meter OFF and then turn the meter ON 6 The auto power off feature will be restored automatically when the meter is turned off Auto off is the default function when the meter is turned on Calibration Calibration should be performed daily The electrode membrane must be clean and dry or the calibration will be incorrect This is a water saturated a...

Page 12: ...calibration standard such as 5 sodium sulfite Slowly stir the standard with the meter or use a stirring plate 2 Wait for the reading to stabilize This may take a while depending on the electrode history 3 Press the CAL RECALL button for 2 seconds until CAL is displayed 4 0 00 and SA will appear on the display When the calibration is complete END will appear on the display and the meter will return...

Page 13: ...ODE HOLD button Hold Release On Hold Momentary press of MODE HOLD button Enter Memory Retrieval On Any Momentary press of CAL RECALL button followed by a momentary press of MODE HOLD button within 4 seconds Scroll Stored Readings On Memory Recall Momentary press of MODE HOLD button Displays last in first out Exit Memory Retrieval On Memory Recall Momentary press of CAL RECALL button Clear Stored M...

Page 14: ...ease the CAL RECALL button one more time to enter the measurement mode Enter Altitude Compensation On Any or SAL Press CAL Recall button twice to enter SAL Press CAL RECALLfor 2 seconds to enter Altitude Compensation mode Displays Ald Change Altitude Compensation On Ald Momentary press of MODE HOLD button Each press increases by 1000 ft from 0 to 20 000 ft Exit Altitude Compensation On Ald Press C...

Page 15: ...tabs 3 Replace the four CR2032 batteries Observe polarity 4 Replace the battery compartment cap Replacing the Electrode 1 Turn the TRACER off Unscrew and remove the electrode collar Turn collar clockwise 2 Gently rock the electrode side to side while pulling it away from the meter until it disconnects from the electrode socket 3 To attach an electrode align the slots and carefully plug the electro...

Page 16: ...t 1 The electrode should remain attached to the meter 2 Carefully unscrew the membrane cap assembly in a clockwise direction and remove it from the electrode 3 Discard the used membrane cap assembly It cannot be reused 4 Rinse the electrode with deionized water or tap water to remove electrolyte solution 5 Moisten a Polishing Strip Use the cloth to clean polish shine and or remove scratches from t...

Page 17: ...his dipping technique will minimize the introduction of air bubbles into the electrolyte solution Air bubbles can compromise dissolved oxygen measurements Finally carefully pick up the membrane cap and slowly screw it onto the electrode in a counter clockwise direction until it is fully tightened 10 While replacing the cap excess electrolyte solution will leak out This is normal and desirable sinc...

Page 18: ... use stirring plate Slow response Dirty or damaged membrane Replace electrolyte and membrane cap assembly Electrode can not be calibrated Depleted electrolyte Dirty or damaged membrane Replace electrolyte and membrane cap assembly Replace electrolyte and membrane cap assembly Electrode can not be calibrated after replacing electrolyte and membrane cap Dirty probe Cathode is not a shiny gold color ...

Page 19: ...er batteries This product can not be returned without a return authorization number from LaMotte Company For warranty support or a Return Authorization Number contact LaMotte Company at 1 800 344 3100 or tech lamotte com LIMITATIONS This guarantee is void under the following circumstances Damage due to operator negligence misuse accident or improper application Damage or alterations from attempted...

Page 20: ...se the electrode above the bottom edge of the electrode collar 3 Stir sample with meter until display stabilizes 4 Record result 5 Turn meter off Rinse electrode with deionized water Replace cap LaMOTTE COMPANY Helping People Solve Analytical Challenges PO Box 329 Chestertown Maryland 21620 USA 800 344 3100 410 778 3100 Outside U S A Fax 410 778 6394 Visit us on the web at www lamotte com 1761 MN ...

Page 21: ...21 ...